Pith Number

pith:YCZ6LAZ4

pith:2018:YCZ6LAZ4Q3PWMKOJA5ZUSB5IEP

not attested not anchored not stored refs pending

Blazhko Effect in the first overtone RR Lyrae stars of the OGLE Galactic bulge collection

Andrzej Udalski, Henryka Netzel, Igor Soszynski, Radoslaw Smolec

arxiv:1812.05409 v1 · 2018-12-13 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YCZ6LAZ4Q3PWMKOJA5ZUSB5IEP}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:58:20.340110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0b3e5833c86df6629c907734907a823ea880ac6bc930aa6964c018534c392c1

Aliases

arxiv: 1812.05409 · arxiv_version: 1812.05409v1 · doi: 10.48550/arxiv.1812.05409 · pith_short_12: YCZ6LAZ4Q3PW · pith_short_16: YCZ6LAZ4Q3PWMKOJ · pith_short_8: YCZ6LAZ4

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/YCZ6LAZ4Q3PWMKOJA5ZUSB5IEP \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c0b3e5833c86df6629c907734907a823ea880ac6bc930aa6964c018534c392c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b0a684ab1253cc8b7ba9cb0e334ea6e28e10c0e6a32335c7fafb55448421769",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-12-13T13:16:05Z",
    "title_canon_sha256": "f6de3fb1b23dd37dc65485685dbf6af15c828fea4fab3155d4d26a0d15591b38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.05409",
    "kind": "arxiv",
    "version": 1
  }
}